# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 44.384540 km # Date (UTC) = 2014-01-18T09:47:12.865 # Date (julian) = 2456675.90778779 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.0734 1.0106433e+11 0.033469757 0.031099157 -24.687416 53.311538 6497.9332 9.1136276e+10 0.039100514 0.031659974 -24.808353 53.207282 6499.7930 8.2446356e+10 0.044749371 0.032220790 -24.926212 53.099946 6501.6528 7.4689193e+10 0.050502078 0.032781607 -25.042979 52.991519 6503.5126 6.7740190e+10 0.056436280 0.033342423 -25.159746 52.883092 6505.3724 6.2409880e+10 0.062793707 0.033903240 -25.276512 52.774666 6507.2322 5.7956929e+10 0.069651828 0.034464056 -25.393279 52.666241 6509.0920 5.3895793e+10 0.077042146 0.035024873 -25.510046 52.561745 6510.9518 5.0324978e+10 0.085103588 0.035585689 -25.626813 52.457489 6512.8116 4.6797521e+10 0.093760953 0.036146506 -25.741309 52.350962 6514.6714 4.3676766e+10 0.10316216 0.036707322 -25.853906 52.242537 6516.5312 4.0886612e+10 0.11328473 0.037268139 -25.966502 52.134111 6518.3910 3.8178174e+10 0.12400433 0.037828955 -26.079098 52.025684 6520.2508 3.5582703e+10 0.13527302 0.038389772 -26.191695 51.917256 6522.1106 3.3059926e+10 0.14670674 0.038946201 -26.304291 51.808830 6523.9704 3.0754147e+10 0.15342573 0.039419611 -26.416888 51.700405 6525.8301 2.8572685e+10 0.15965572 0.039687472 -26.528022 51.591978 6527.6899 2.6531950e+10 0.16658456 0.041217377 -26.636448 51.483551 6529.5497 2.4647713e+10 0.17117685 0.043111468 -26.744875 51.375124 6531.4095 2.2932988e+10 0.17379511 0.045824759 -26.853301 51.270671 6533.2693 2.1434128e+10 0.17550076 0.047634044 -26.961728 51.166414 6535.1291 2.0039727e+10 0.17531244 0.048168283 -27.067841 51.059845 6536.9889 1.8693972e+10 0.17440328 0.048675314 -27.172097 50.951420 6538.8487 1.7434134e+10 0.17304663 0.049569961 -27.277007 50.842994 6540.7085 1.6245649e+10 0.17203514 0.051188822 -27.385434 50.734566 6542.5683 1.5143590e+10 0.17044061 0.051217999 -27.493860 50.626139 6544.4281 1.4132231e+10 0.16890948 0.051991634 -27.595957 50.517713 6546.2879 1.3180617e+10 0.16711062 0.052701421 -27.696043 50.409287 6548.1477 1.2302118e+10 0.16620937 0.053711753 -27.797634 50.300862 6550.0075 1.1473371e+10 0.16545591 0.054987235 -27.901890 50.192436 6551.8673 1.0704869e+10 0.16409557 0.055540182 -28.006146 50.084011 6553.7271 1.0014637e+10 0.16241099 0.054969572 -28.106386 49.975583 6555.5869 9.3760489e+09 0.16105419 0.054360246 -28.206472 49.867156 6557.4467 8.7937547e+09 0.15972576 0.053586130 -28.306548 49.758740 6559.3065 8.2375144e+09 0.15762498 0.052352590 -28.406616 49.650333 6561.1663 7.7118124e+09 0.15533349 0.051290748 -28.506688 49.541923 6563.0261 7.2490721e+09 0.15351073 0.049898219 -28.606774 49.433495 6564.8859 6.8096733e+09 0.15159198 0.048370126 -28.706860 49.325068 6566.7457 6.4098914e+09 0.14951516 0.046761070 -28.803739 49.216642 6568.6054 6.0196758e+09 0.14760455 0.045215110 -28.899655 49.108216 6570.4652 5.6663455e+09 0.14610001 0.044724789 -28.991128 49.003459 6572.3250 5.3882573e+09 0.14434805 0.044044013 -29.075065 48.904924 6574.1848 5.1617938e+09 0.14210354 0.042766229 -29.159003 48.806389 6576.0446 4.9707330e+09 0.14020991 0.041320020 -29.247864 48.701615 6577.9044 4.7536480e+09 0.13849929 0.038799734 -29.339610 48.593188 6579.7642 4.5156395e+09 0.13653484 0.036650369 -29.432322 48.484765 6581.6240 4.2686302e+09 0.13469752 0.035407647 -29.528221 48.376358 6583.4838 4.0236822e+09 0.13316386 0.034776780 -29.624120 48.267951 6585.3436 3.8023916e+09 0.13163525 0.033696063 -29.716553 48.159528 6587.2034 3.5849698e+09 0.13017012 0.033203437 -29.808299 48.051102 6589.0632 3.3844064e+09 0.12844621 0.032920587 -29.900045 47.942676 6590.9230 3.1819639e+09 0.12641187 0.029345143 -29.991790 47.834249 6592.7828 2.9959466e+09 0.12465879 0.027313193 -30.082953 47.726344 6594.6426 2.8422773e+09 0.12245025 0.025819772 -30.159591 47.631459 6596.5024 2.7144473e+09 0.11981061 0.025724990 -30.236230 47.536575 6598.3622 2.6050344e+09 0.11779384 0.025234246 -30.316131 47.437649 6600.2220 2.4922037e+09 0.11696904 0.025446222 -30.403706 47.329222 6602.0818 2.3718648e+09 0.11602016 0.027446850 -30.491281 47.220794 6603.9416 2.2486147e+09 0.11419772 0.026105867 -30.578856 47.108613 6605.8014 2.1314613e+09 0.11349353 0.027337326 -30.666430 46.996016 6607.6612 2.0207248e+09 0.11127577 0.024401449 -30.753998 46.885524 6609.5210 1.9096734e+09 0.10808934 0.023860680 -30.841559 46.777117 6611.3808 1.8085202e+09 0.10513933 0.024715648 -30.927982 46.670118 6613.2405 1.7197606e+09 0.10393124 0.023661849 -31.004619 46.575232 6615.1003 1.6498245e+09 0.10261482 0.023254619 -31.081257 46.480346 6616.9601 1.5924985e+09 0.10133212 0.023432993 -31.160358 46.380532 6618.8199 1.5281353e+09 0.10080089 0.024389945 -31.243763 46.272106 6620.6797 1.4607055e+09 0.10025587 0.024986241 -31.327168 46.163681 6622.5395 1.3915006e+09 0.099150812 0.024614388 -31.410574 46.051226 6624.3993 1.3266023e+09 0.097685630 0.025076066 -31.493979 45.938629 6626.2591 1.2658043e+09 0.096503255 0.026260761 -31.577384 45.828401 6628.1189 1.2016697e+09 0.095189919 0.025751376 -31.660788 45.719976 6629.9787 1.1399528e+09 0.094057746 0.025932151 -31.741797 45.613857 6631.8385 1.0870398e+09 0.092421269 0.026015941 -31.811126 45.518985 6633.6983 1.0415331e+09 0.091074388 0.026274170 -31.880455 45.424113 6635.5581 1.0048772e+09 0.089629046 0.026483483 -31.955831 45.323419 6637.4179 9.6462303e+08 0.088349373 0.025956739 -32.039235 45.214993 6639.2777 9.2047261e+08 0.087451348 0.025528822 -32.122507 45.106436 6641.1375 8.7544918e+08 0.087813717 0.025148767 -32.201744 44.993838 6642.9973 8.2964386e+08 0.087300005 0.025192507 -32.280980 44.881241 6644.8571 7.9017398e+08 0.086194896 0.025436238 -32.353937 44.779878 6646.7169 7.6103219e+08 0.084840849 0.026291225 -32.423265 44.685008 6648.5767 7.3531742e+08 0.083522188 0.027350309 -32.492593 44.590137 6650.4365 7.1196609e+08 0.082722971 0.026355156 -32.567045 44.483158 6652.2963 6.8293794e+08 0.081979728 0.027332035 -32.642109 44.374731 6654.1561 6.5001351e+08 0.081119769 0.027969744 -32.719239 44.266305 6656.0159 6.1684490e+08 0.079533663 0.028037332 -32.798473 44.157880 6657.8756 5.8792823e+08 0.078408333 0.029916836 -32.877301 44.049048 6659.7354 5.6097408e+08 0.077249945 0.031681184 -32.952365 43.936452 6661.5952 5.3281983e+08 0.076121219 0.032838119 -33.027430 43.823855 6663.4550 5.0896507e+08 0.075145269 0.032357111 -33.095932 43.723654 6665.3148 4.8751995e+08 0.074971363 0.028031266 -33.161612 43.628781 6667.1746 4.6995681e+08 0.074569959 0.027167602 -33.227292 43.533909 6669.0344 4.5187949e+08 0.073445758 0.028320347 -33.301970 43.426042 6670.8942 4.3289211e+08 0.073620490 0.026914355 -33.377035 43.317617 6672.7540 4.1265117e+08 0.073340654 0.027316640 -33.449761 43.209190 6674.6138 3.9737961e+08 0.072147716 0.029472581 -33.520655 43.100763 6676.4736 3.8074537e+08 0.070116166 0.032018961 -33.592229 42.991657 6678.3334 3.6112864e+08 0.069420119 0.030713620 -33.667292 42.879062 6680.1932 3.4153613e+08 0.069818142 0.029483136 -33.742355 42.766467 6682.0530 3.1797880e+08 0.070487491 0.030465033 -33.807450 42.667429 6683.9128 3.0241650e+08 0.070630776 0.032526285 -33.869481 42.572558 6685.7726 2.9436176e+08 0.070085846 0.033520879 -33.931729 42.477355 6687.6324 2.8595649e+08 0.067985201 0.033990214 -34.002623 42.368929 6689.4922 2.7884834e+08 0.065716113 0.033572985 -34.073517 42.260503 6691.3520 2.6439296e+08 0.064811675 0.032918220 -34.144411 42.152076 6693.2118 2.4864480e+08 0.064068490 0.031531439 -34.215306 42.043649 6695.0716 2.4017540e+08 0.063568005 0.029846328 -34.286201 41.934269 6696.9314 2.2754817e+08 0.063144309 0.030062747 -34.357094 41.821673 6698.7912 2.1576907e+08 0.062195532 0.031303771 -34.427987 41.709076 6700.6510 2.0422150e+08 0.060837580 0.031150548 -34.488489 41.611202 6702.5107 1.9353483e+08 0.060188925 0.033284565 -34.546871 41.516332 6704.3705 1.8928659e+08 0.060461388 0.036359510 -34.606004 41.420241 6706.2303 1.8504212e+08 0.060415719 0.038847294 -34.672728 41.311814 6708.0901 1.7755253e+08 0.060219419 0.040141733 -34.739451 41.203387 6709.9499 1.7101261e+08 0.059292114 0.040528340 -34.809062 41.094961 6711.8097 1.6323741e+08 0.057544755 0.041613481 -34.879958 40.986534 6713.6695 1.5617605e+08 0.055843082 0.046108147 -34.949626 40.876882 6715.5293 1.4920462e+08 0.054424017 0.047919961 -35.016350 40.764285 6717.3891 1.4445908e+08 0.052699926 0.049850200 -35.083073 40.651688 6719.2489 1.3719478e+08 0.051002114 0.051133355 -35.146061 40.542830 6721.1087 1.2951928e+08 0.051570733 0.050336653 -35.208615 40.434404 6722.9685 1.2696942e+08 0.050734329 0.049407883 -35.269090 40.332732 6724.8283 1.2192090e+08 0.047219864 0.043009836 -35.327472 40.237860 6726.6881 1.2383551e+08 0.045385710 0.040957573 -35.385854 40.142988 6728.5479 1.2422303e+08 0.045097777 0.040404640 -35.450557 40.037847 6730.4077 1.1682615e+08 0.043849894 0.040937890 -35.517280 39.929422 6732.2675 1.1486896e+08 0.042577831 0.043789452 -35.582504 39.819495 6734.1273 1.0891592e+08 0.041917033 0.049345942 -35.645057 39.706898 6735.9871 1.0348984e+08 0.043611965 0.050341284 -35.707610 39.594301 6737.8469 1.0079425e+08 0.044873836 0.056833289 -35.770164 39.485716 6739.7067 95604479. 0.045084045 0.063691376 -35.832718 39.377290 6741.5665 95099078. 0.043649256 0.067374271 -35.895272 39.268864 6743.4263 93623058. 0.040136281 0.073922957 -35.957824 39.160437 6745.2861 89485115. 0.038165965 0.078687141 -36.020377 39.052010 6747.1458 82921997. 0.033901992 0.067310951 -36.082931 38.943584 6749.0056 77446976. 0.034291550 0.072276388 -36.145486 38.835159 6750.8654 76670247. 0.031644031 0.073481905 -36.208040 38.726732 6752.7252 74198447. 0.029157806 0.073295243 -36.270594 38.618305 6754.5850 72107577. 0.027999341 0.075272667 -36.331605 38.509878 6756.4448 70518913. 0.025863605 0.075311516 -36.389988 38.401453 6758.3046 65259741. 0.026328010 0.074349489 -36.448371 38.293027 6760.1644 61570786. 0.026925356 0.076374811 -36.510808 38.180546 6762.0242 54391213. 0.031185113 0.078011783 -36.573361 38.067949 6763.8840 49733423. 0.033609008 0.079130038 -36.633521 37.957746 6765.7438 52142567. 0.034114860 0.079666978 -36.691905 37.849319